CN106125613A - A kind of signal level adjustment type sewage treatment control system - Google Patents
A kind of signal level adjustment type sewage treatment control system Download PDFInfo
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- CN106125613A CN106125613A CN201610591699.2A CN201610591699A CN106125613A CN 106125613 A CN106125613 A CN 106125613A CN 201610591699 A CN201610591699 A CN 201610591699A CN 106125613 A CN106125613 A CN 106125613A
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
- G05B19/042—Programme control other than numerical control, i.e. in sequence controllers or logic controllers using digital processors
- G05B19/0423—Input/output
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
- G05B2219/20—Pc systems
- G05B2219/21—Pc I-O input output
- G05B2219/21085—Define type of I-O, analog, digital, pulse
Abstract
The invention discloses a kind of signal level adjustment type sewage treatment control system, it is characterized in that: main by central processing unit, signal processing unit, data storage, display and the PLC being all connected with central processing unit, the pH value sensor being connected with signal processing unit, and first be all connected with PLC passes relay and the second relay forms；Described signal processing unit is by processing chip U, and audion VT3, Zener diode D4, polar capacitor C7, second-order filter circuit, signal level regulates circuit, and pulse shaper composition.Sewage disposal device can be controlled by the present invention by the result of the pH value detection of the sewage after processing by pH value sensor；And the interference signal in the signal of telecommunication of pH value sensor output can be eliminated or suppress by the present invention, ensures that the accuracy that sewage disposal device is controlled by the present invention.
Description
Technical field
The present invention relates to sewage treatment area, specifically refer to a kind of signal level adjustment type sewage treatment control system.
Background technology
Current shortage of water resources has become as the problem of a globalization, along with the quick growth of China's population, hydropenia shape
Gesture is the severeest.According to the demographics of 1998, China's water resource of per capita only had 2221 cubes, and the only world is per capita
The 1/4 of amount, is one of few 13 poor-waters country of world's water resource per capita, and water has become restriction Chinese society economy and persistently sent out
The key factor of exhibition.Meanwhile, along with China's rapid economic development, water environment pollution is on the rise.In order to saving water resource,
Protection water environment, people start to research and develop various sewage disposal device, make the sewage after process to recycle.
But, the control system of existing sewage disposal device is easily occurred by extraneous Electromagnetic Interference controlling to be forbidden
Really, and the problem according to the parameter information of the sewage PH value after processing, sewage disposal device can not being controlled, cause
Sewage can not well be processed by sewage disposal device, so that the sewage after Chu Liing can not reach wanting of reusable edible
Ask.
Therefore it provides sewage disposal device can accurately be controlled by one, can believe according to the parameter of sewage PH value again
The sewage treatment control system that sewage disposal device is controlled by breath is the task of top priority.
Summary of the invention
It is an object of the invention to overcome the control system of existing sewage disposal device easily by extraneous Electromagnetic Interference
And occur controlling inaccurate, and according to the parameter information of the sewage PH value after processing, sewage disposal device can not be controlled
The defect of system, it is provided that a kind of signal level adjustment type sewage treatment control system.
The purpose of the present invention is by following technical proposals reality: a kind of signal level adjustment type sewage treatment control system,
Mainly by central processing unit, the signal processing unit being all connected with central processing unit, data storage, display and PLC control
Device processed, the pH value sensor being connected with signal processing unit, and be all connected with PLC first biography relay and
Second relay composition；Described signal processing unit by processing chip U, audion VT3, N pole and process chip U VS pin phase
Connect, P pole after resistance R9 with the Zener diode D4 that is connected of CC pin processing chip U, positive pole after resistance R10 with place
Polar capacitor C7, the N pole that the CF pin of reason chip U is connected, negative pole base stage with audion VT3 after resistance R11 is connected
Be connected with the PWM pin processing chip U after resistance R13, P pole emitter stage with audion VT3 after resistance R12 is connected
Diode D5, the second-order filter that input is connected with pH value sensor, outfan is connected with the IN pin of process chip U
Circuit, respectively with the signal level regulation circuit processing the OUT pin of chip U and PWM pin is connected, and respectively with process
The pulse shaper composition that the COMP pin of chip U is connected with signal level regulation circuit；Described signal level regulation electricity
Road is also connected with central processing unit.
Further, described second-order filter circuit is by amplifier P1, audion VT1, audion VT2, positive pole and amplifier
With the positive pole of amplifier P1 after polar capacitor C1, P electrode resistance R1 that the positive pole of P1 is connected, negative pole is connected with pH value sensor
Be connected, diode D1, P pole that N pole is connected with the colelctor electrode of audion VT1 after resistance R4 with the negative pole phase of amplifier P1
Connect, diode D2 that N pole outfan with amplifier P1 after resistance R3 is connected, negative pole is connected with the negative pole of amplifier P1
Meet the polar capacitor C5 that rear ground connection, positive pole are connected after inductance L1 with the N pole of diode D2, positive pole after resistance R2 with three poles
The polar capacitor C2 that the colelctor electrode of pipe VT1 is connected, negative pole is connected with the colelctor electrode of audion VT2, negative pole and process chip U
The polar capacitor C3 that IN pin is connected, positive pole colelctor electrode with audion VT2 after resistance R5 is connected, negative pole and three poles
Polar capacitor C4, the P pole that the base stage of pipe VT2 is connected, positive pole is connected with the emitter stage of audion VT1 is after adjustable resistance R8
Be connected with the emitter stage of audion VT2, diode D3 that N pole emitter stage with audion VT1 after resistance R7 is connected, with
And the pole of ground connection after positive pole emitter stage with audion VT1 after resistance R6 is connected, negative pole is connected with the N pole of diode D3
Property electric capacity C6 composition；The N pole of described diode D2 also emitter stage with audion VT1 is connected, its base stage is with amplifier P1's
Outfan is connected.
Described pulse shaper is by audion VT4, audion VT5, audion VT6, P pole and the COMP processing chip U
The diode D9 that pin is connected, N pole is connected with the base stage of audion VT6, positive pole after resistance R18 with audion VT6's
Colelctor electrode is connected, negative pole emitter stage with audion VT6 after resistance R20 is connected polar capacitor C10, N pole and polarity
The diode D8 that the negative pole of electric capacity C10 is connected, P pole colelctor electrode with audion VT5 after adjustable resistance R19 is connected, just
The polar capacitor C11 that pole is connected with the colelctor electrode of audion VT5, negative pole and signal level regulation circuit is connected, positive pole with
Polar capacitor C9, the P pole that the base stage of audion VT4 is connected, negative pole base stage with audion VT5 after resistance R17 is connected
Be connected with the emitter stage of audion VT4, diode D6 that N pole is connected with the colelctor electrode of audion VT4, negative pole and audion
The polar capacitor C8 that the emitter stage of VT5 is connected, positive pole emitter stage with audion VT4 after resistance R14 is connected, one end with
The resistance R16 that the positive pole of polar capacitor C8 is connected, the other end is connected with the negative pole of polar capacitor C9, and P pole is through resistance
After R15, the emitter stage with audion VT5 is connected, the diode D7 of N pole ground connection forms；The colelctor electrode of described audion VT4 is also
It is connected with the colelctor electrode of audion VT6；The emitter stage of described audion VT6 is also connected with the OUT pin processing chip U；
The P pole of described diode D8 also negative pole with polar capacitor C9 is connected.
Described signal level regulation electricity routing amplifier P2, amplifier P3, audion VT7, P pole and the PWM processing chip U
The diode D10 that pin is connected, N pole is connected with the positive pole of amplifier P2, positive pole negative with amplifier P2 after resistance R25
Pole is connected, polar capacitor C15, the P pole of minus earth is connected with the negative pole of amplifier P2, N pole is sequentially through resistance R28 and electricity
The diode D11 being connected with the outfan of amplifier P2 after resistance R26, one end is connected with the negative pole of amplifier P2, the other end
The resistance R29 of ground connection, positive pole positive pole with amplifier P2 after resistance R23 is connected, the outfan phase of negative pole and amplifier P2
The polar capacitor C13 connected, negative pole positive pole with amplifier P3 after resistance R21 is connected, positive pole after resistance R22 with amplification
The polar capacitor C12 that the positive pole of device P2 is connected, negative pole colelctor electrode with audion VT7 after inductance L2 is connected, positive pole warp
The polar capacitor C14 that after resistance R24, outfan with amplifier P2 is connected, and N pole after resistance R27 with audion VT7
The diode D12 composition that colelctor electrode is connected, P pole positive pole with polar capacitor C14 after resistance R30 is connected；Described pole
Property electric capacity C12 positive pole also with process chip U OUT pin be connected；The base stage of described audion VT7 is defeated with amplifier P2's
Go out end be connected, its emitter stage is connected with the negative pole of amplifier P3 and the negative pole of polar capacitor C11 the most respectively；Described diode
The N pole ground connection of D12；The outfan of described amplifier P3 is also connected with central processing unit.
For the practical effect of the present invention, described process chip U the most preferentially have employed the integrated chip of AD736 and realizes.
The present invention compared with prior art has the following advantages and beneficial effect:
(1) sewage disposal can be set by the present invention by the result of the pH value detection of the sewage after processing by pH value sensor
For being controlled；And the interference signal in the signal of telecommunication of pH value sensor output can be eliminated or suppress by the present invention, and
The dutycycle of the signal frequency square wave of the signal of telecommunication can be adjusted, make signal frequency more stable, ensure that the present invention
The accuracy controlling sewage disposal device, makes sewage disposal device well can process sewage, and after making process
Sewage can reach the requirement of reusable edible.
(2) width of energy pulse signals of the present invention is adjusted, low-order harmonic in effective suppression or elimination signal, from
And improve the accuracy that sewage disposal device is controlled by the present invention.
Accompanying drawing explanation
Fig. 1 is the overall structure block diagram of the present invention.
Fig. 2 is the electrical block diagram of the signal processing unit of the present invention.
Detailed description of the invention
Below in conjunction with embodiment, the present invention is described in further detail, but embodiments of the present invention are not limited to
This.
Embodiment
As it is shown in figure 1, the present invention is mainly by central processing unit, the signal processing unit being all connected with central processing unit,
Data storage, display and PLC, the pH value sensor being connected with signal processing unit, and all control with PLC
The first biography relay and the second relay that device is connected form.
During enforcement, described central processing unit the most preferentially have employed MSP430 single-chip microcomputer and realizes, this MSP430 single-chip microcomputer
XIN pin be connected with signal processing unit, XOUT pin is connected with PLC, TEST pin and data storage
Being connected, IFG pin is connected with display, and DVCC pin is then connected with civil power.In order to the present invention preferably implements, described
PLC the most preferentially have employed Rhizoma Sparganii Programmable Logic Controller FX1N22MR and realize, the X1 interface of this PLC with in
The XOUT pin of central processor is connected, and Y1 interface and first passes relay and is connected, and Y2 interface and the second relay are connected.
The first described biography relay electrically connects with water pump in cesspool when implementing, and second passes relay then reacts with sewage disposal
Water pump electrical connection in pond.
Wherein, described pH value sensor the most preferentially have employed WQ201PH value sensor and realizes, and this pH value sensor sets
Put in sewage disposal reaction tank, and for detecting the sewage PH value information in sewage reaction tank, and the sewage PH that will detect
Value information is transferred to signal processing unit after being converted to the signal of telecommunication, doing in the signal of telecommunication that this signal processing unit then will receive
Disturb signal eliminate or suppress, and the dutycycle of the signal frequency square wave of the signal of telecommunication is adjusted, make signal frequency more
Stable, the signal of telecommunication after this signal processing unit will process simultaneously is transferred to central processing unit.This central processing unit is then by right
The signal of telecommunication received obtains the pH value parameter of sewage after being analyzed processing.Described data storage the most preferentially have employed LCW-
S01 data storage, stores parameter area value and the centre of the pH value that sewage can be recycled in this data storage
Reason device is connected, and central processing unit obtains parameter and the dirt in data storage of the pH value of sewage after then being analyzed and processed
The parameter area value of the pH value that water can be recycled compares.Store in the data storage of the present invention that sewage is capable of circulation to be made
PH value parameter area value is national regulation 6～9.Meanwhile, central processing unit then then will be divided by described display
Analysis obtains the parameter area value of the pH value that the sewage in the parameter of pH value of sewage and data storage can be recycled after processing
Show, in order to sewage disposal process is preferably understood by people.
When the present invention runs, first PLC then controls the normally opened contact Guan Bi of the first biography relay, makes in cesspool
Water pump obtain electric starting working, will be discharged in sewage disposal reaction tank process, in PLC by the sewage in cesspool
Inside being set with the corresponding time being filled by sewage disposal reaction tank and emptying, its time can be according to the size of sewage disposal reaction tank
It is set.PH value sensor then carries out pH value detection to the water in sewage disposal reaction tank, and this pH value sensor also will detection
Information be transferred to central processing unit.The parameter of the pH value obtaining sewage after central processing unit is analyzed and processed stores with data
When parameter value in the parameter area value of the pH value that the sewage in device can be recycled is consistent, central processing unit output control signal
To PLC, this PLC receives after this control signal then output and controls electric current to the second biography relay, now, the
Two pass relays obtain electric after its normally opened contact Guan Bi, the water pump in sewage disposal reaction tank obtains electric starting working, and by sewage
Water in reason reaction tank is discharged.After the discharge of sewage disposal reaction tank completes, PLC controls the normally opened of the first biography relay
The closing of contact, the water pump in cesspool reworks, and in sewage disposal reaction tank, sewage is refilled.The most repeatedly run i.e.
Sewage effectively can be processed.
As in figure 2 it is shown, described signal processing unit is by processing chip U, audion VT3, resistance R9, resistance R10, resistance
R11, resistance R12, resistance R13, polar capacitor C7, Zener diode D4, and diode D5, second-order filter circuit, pulse is whole
Shape circuit, and signal level regulation circuit composition.
During connection, the N pole of Zener diode D4 with process chip U VS pin be connected, P pole after resistance R9 with process
The CC pin of chip U is connected.The positive pole of polar capacitor C7 is connected with the CF pin processing chip U after resistance R10, negative pole
After resistance R11, the base stage with audion VT3 is connected.
Wherein, the N pole of diode D5 is connected with the PWM pin processing chip U after resistance R13, and P pole is through resistance R12
Emitter stage with audion VT3 is connected afterwards.The input of second-order filter circuit is connected with pH value sensor, outfan and place
The IN pin of reason chip U is connected.Signal level regulation circuit is connected with the OUT pin processing chip U and PWM pin respectively
Connect.Pulse shaper is connected with the COMP pin processing chip U and signal level regulation circuit respectively.Described signal level
Regulation circuit is also connected with central processing unit.
Further, described second-order filter circuit is by amplifier P1, audion VT1, audion VT2, resistance R1, resistance
R2, resistance R3, resistance R4, resistance R5, resistance R6, resistance R7, adjustable resistance R8, polar capacitor C1, polar capacitor C2, polarity electricity
Hold C3, polar capacitor C4, polar capacitor C5, polar capacitor C6, diode D1, diode D2, diode D3, and inductance L1 group
Become.
During connection, the positive pole of polar capacitor C1 is connected with the positive pole of amplifier P1, and negative pole is connected with pH value sensor.
After P electrode resistance R1 of diode D1, the positive pole with amplifier P1 is connected, and N pole is connected with the colelctor electrode of audion VT1.Two poles
The P pole of pipe D2 negative pole with amplifier P1 after resistance R4 is connected, and N pole outfan with amplifier P1 after resistance R3 is connected
Connect.
Wherein, the negative pole of polar capacitor C5 be connected with the negative pole of amplifier P1 after ground connection, positive pole after inductance L1 with two
The N pole of pole pipe D2 is connected.The positive pole of polar capacitor C2 colelctor electrode with audion VT1 after resistance R2 is connected, negative pole with
The colelctor electrode of audion VT2 is connected.The negative pole of polar capacitor C3 is connected with the IN pin processing chip U, and positive pole is through resistance
After R5, the colelctor electrode with audion VT2 is connected.The negative pole of polar capacitor C4 is connected with the base stage of audion VT2, positive pole with
The emitter stage of audion VT1 is connected.
Meanwhile, the P pole of diode D3 emitter stage with audion VT2 after adjustable resistance R8 is connected, and N pole is through resistance R7
Emitter stage with audion VT1 is connected afterwards.The positive pole of polar capacitor C6 emitter stage with audion VT1 after resistance R6 is connected
Connect, negative pole be connected with the N pole of diode D3 after ground connection.The N pole of described diode D2 also emitter stage with audion VT1 is connected
Connecing, its base stage is connected with the outfan of amplifier P1.
Further, described pulse shaper is by audion VT4, audion VT5, audion VT6, resistance R14, electricity
Resistance R15, resistance R16, resistance R17, resistance R18, adjustable resistance R19, resistance R20, polar capacitor C8, polar capacitor C9, polarity
Electric capacity C10, polar capacitor C11, diode D6, diode D7, diode D8, and diode D9 form.
During connection, the P pole of diode D9 is connected with the COMP pin processing chip U, N pole and the base stage of audion VT6
It is connected.The positive pole of polar capacitor C10 colelctor electrode with audion VT6 after resistance R18 is connected, and negative pole is after resistance R20
It is connected with the emitter stage of audion VT6.The N pole of diode D8 is connected with the negative pole of polar capacitor C10, and P pole is through adjustable electric
It is connected with the colelctor electrode of audion VT5 after resistance R19.The positive pole of polar capacitor C11 is connected with the colelctor electrode of audion VT5,
Negative pole is connected with signal level regulation circuit.
Meanwhile, the positive pole of polar capacitor C9 is connected with the base stage of audion VT4, negative pole after resistance R17 with audion
The base stage of VT5 is connected.The P pole of diode D6 is connected with the emitter stage of audion VT4, N pole and the colelctor electrode of audion VT4
It is connected.The negative pole of polar capacitor C8 is connected with the emitter stage of audion VT5, positive pole after resistance R14 with audion VT4's
Emitter stage is connected.One end of resistance R16 is connected with the positive pole of polar capacitor C8, the negative pole phase of the other end and polar capacitor C9
Connect.The P pole of diode D7 emitter stage with audion VT5 after resistance R15 is connected, N pole ground connection.
The colelctor electrode of described audion VT4 also colelctor electrode with audion VT6 is connected；The transmitting of described audion VT6
Pole is also connected with the OUT pin processing chip U；The P pole of described diode D8 also negative pole with polar capacitor C9 is connected.
Yet further, described signal level regulation electricity routing amplifier P2, amplifier P3, audion VT7, resistance R21,
Resistance R22, resistance R23, resistance R24, resistance R25, resistance R26, resistance R27, resistance R28, resistance R29, resistance R30, polarity
Electric capacity C12, polar capacitor C13, polar capacitor C14, polar capacitor C15, diode D10, diode D11, diode D12, with
And inductance L2 composition.
During connection, the P pole of diode D10 is connected with the PWM pin processing chip U, the positive pole phase of N pole and amplifier P2
Connect.The positive pole of polar capacitor C15 negative pole with amplifier P2 after resistance R25 is connected, minus earth.The P of diode D11
Pole is connected with the negative pole of amplifier P2, and N pole is sequentially connected through resistance R28 outfan with amplifier P2 after resistance R26.
Wherein, one end of resistance R29 is connected with the negative pole of amplifier P2, other end ground connection.The positive pole of polar capacitor C13
After resistance R23, the positive pole with amplifier P2 is connected, and negative pole is connected with the outfan of amplifier P2.Polar capacitor C12's
Negative pole positive pole with amplifier P3 after resistance R21 is connected, and positive pole positive pole with amplifier P2 after resistance R22 is connected.
Meanwhile, the negative pole of polar capacitor C14 colelctor electrode with audion VT7 after inductance L2 is connected, and positive pole is through resistance
After R24, the outfan with amplifier P2 is connected.The N pole of diode D12 after resistance R27 with the colelctor electrode phase of audion VT7
Connecting, P pole positive pole with polar capacitor C14 after resistance R30 is connected.
The positive pole of described polar capacitor C12 is also connected with the OUT pin processing chip U；The base stage of described audion VT7
Be connected with the outfan of amplifier P2, its emitter stage the most respectively with negative pole and the negative pole phase of polar capacitor C11 of amplifier P3
Connect；The N pole ground connection of described diode D12；The outfan of described amplifier P3 is also connected with central processing unit.
During operation, during operation, pH value sensor can be exported by the second-order filter circuit in the signal processing unit of the present invention
The signal of telecommunication in interference signal eliminate or suppress, and in signal processing unit signal level regulation circuit can be to telecommunications
Number the dutycycle of signal frequency square wave be adjusted, make signal frequency more stable, ensure that the present invention is to sewage at
The accuracy that reason equipment controls, makes sewage disposal device well can process sewage, and makes the sewage after process to reach
Requirement to reusable edible.
Meanwhile, the width of the pulse shaper energy pulse signals in this signal processing unit is adjusted, effectively
Low-order harmonic in suppression or elimination signal, thus improve the accuracy that sewage disposal device is controlled by the present invention.For the present invention
Practical effect, described process chip U the most preferentially have employed the integrated chip of AD736 and realizes.
As it has been described above, just can well realize the present invention.
Claims (5)
1. a signal level adjustment type sewage treatment control system, it is characterised in that: main by central processing unit, all with central authorities
Signal processing unit, data storage, display and the PLC that processor is connected, is connected with signal processing unit
PH value sensor, and be all connected with PLC first biography relay and the second relay composition；At described signal
Reason unit by processing chip U, audion VT3, N pole with process chip U VS pin be connected, P pole after resistance R9 with process
The Zener diode D4 that the CC pin of chip U is connected, positive pole is connected with the CF pin processing chip U after resistance R10, bears
Polar capacitor C7, the N pole that pole base stage with audion VT3 after resistance R11 is connected after resistance R13 with process chip U's
The diode D5 that PWM pin is connected, P pole emitter stage with audion VT3 after resistance R12 is connected, input and pH value
The second-order filter circuit that sensor is connected, outfan is connected with the IN pin of process chip U, respectively with process chip U's
Signal level that OUT pin is connected with PWM pin regulation circuit, and respectively with COMP pin and the signal processing chip U
The pulse shaper composition that level adjustment circuit is connected；Described signal level regulation circuit is also connected with central processing unit
Connect.
A kind of signal level adjustment type sewage treatment control system the most according to claim 1, it is characterised in that: described two
Rank filtered electrical routing amplifier P1, audion VT1, audion VT2, positive pole is connected with the positive pole of amplifier P1, negative pole and PH
Be connected with the positive pole of amplifier P1 after polar capacitor C1, P electrode resistance R1 that value sensor is connected, N pole and audion VT1
Diode D1, the P pole that colelctor electrode is connected negative pole with amplifier P1 after resistance R4 is connected, N pole after resistance R3 with put
The diode D2 that the outfan of big device P1 is connected, negative pole be connected with the negative pole of amplifier P1 after ground connection, positive pole through inductance L1
The polar capacitor C5 being connected with the N pole of diode D2 afterwards, positive pole colelctor electrode with audion VT1 after resistance R2 is connected,
The polar capacitor C2 that negative pole is connected with the colelctor electrode of audion VT2, negative pole is connected with the IN pin processing chip U, positive pole
The polar capacitor C3 that colelctor electrode with audion VT2 is connected after resistance R5, negative pole is connected with the base stage of audion VT2,
Polar capacitor C4, the P pole that positive pole is connected with the emitter stage of audion VT1 after adjustable resistance R8 with the transmitting of audion VT2
The diode D3 that pole is connected, N pole emitter stage with audion VT1 after resistance R7 is connected, and positive pole is after resistance R6
Be connected with the emitter stage of audion VT1, negative pole be connected with the N pole of diode D3 after ground connection polar capacitor C6 composition；Institute
State that the N pole of the diode D2 emitter stage also with audion VT1 is connected, its base stage is connected with the outfan of amplifier P1.
A kind of signal level adjustment type sewage treatment control system the most according to claim 2, it is characterised in that: described arteries and veins
Rushing shaping circuit by audion VT4, audion VT5, audion VT6, P pole is connected with the COMP pin processing chip U, N pole
The diode D9 being connected with the base stage of audion VT6, positive pole colelctor electrode with audion VT6 after resistance R18 is connected, negative
The negative pole phase of polar capacitor C10, the N pole that pole emitter stage with audion VT6 after resistance R20 is connected and polar capacitor C10
Connect, diode D8 that P pole colelctor electrode with audion VT5 after adjustable resistance R19 is connected, positive pole is with audion VT5's
The polar capacitor C11 that colelctor electrode is connected, negative pole is connected with signal level regulation circuit, positive pole and the base stage of audion VT4
Be connected, polar capacitor C9, P pole that negative pole base stage with audion VT5 after resistance R17 is connected is sent out with audion VT4's
The diode D6 that emitter-base bandgap grading is connected, N pole is connected with the colelctor electrode of audion VT4, negative pole is connected with the emitter stage of audion VT5
Connect, polar capacitor C8 that positive pole emitter stage with audion VT4 after resistance R14 is connected, one end is with polar capacitor C8 just
The resistance R16 that pole is connected, the other end is connected with the negative pole of polar capacitor C9, and P pole after resistance R15 with audion
The emitter stage of VT5 is connected, the diode D7 of N pole ground connection composition；The colelctor electrode of described audion VT4 is also with audion VT6's
Colelctor electrode is connected；The emitter stage of described audion VT6 is also connected with the OUT pin processing chip U；Described diode D8's
P pole also negative pole with polar capacitor C9 is connected.
A kind of signal level adjustment type sewage treatment control system the most according to claim 3, it is characterised in that: described letter
Number level adjustment circuit is by amplifier P2, amplifier P3, and audion VT7, P pole is connected with the PWM pin processing chip U, N pole
The diode D10 being connected with the positive pole of amplifier P2, positive pole negative pole with amplifier P2 after resistance R25 is connected, negative pole
Polar capacitor C15, the P pole of ground connection is connected with the negative pole of amplifier P2, N pole sequentially after resistance R28 and resistance R26 with amplification
The diode D11 that the outfan of device P2 is connected, one end is connected with the negative pole of amplifier P2, the resistance R29 of other end ground connection,
Positive pole polar capacitor that positive pole is connected, negative pole is connected with the outfan of amplifier P2 with amplifier P2 after resistance R23
C13, negative pole positive pole with amplifier P3 after resistance R21 is connected, positive pole positive pole with amplifier P2 after resistance R22 is connected
The polar capacitor C12 connect, negative pole colelctor electrode with audion VT7 after inductance L2 is connected, positive pole after resistance R24 with amplification
The polar capacitor C14 that the outfan of device P2 is connected, and N pole colelctor electrode with audion VT7 after resistance R27 is connected, P
The diode D12 composition that pole positive pole with polar capacitor C14 after resistance R30 is connected；The positive pole of described polar capacitor C12 is also
It is connected with the OUT pin processing chip U；The base stage of described audion VT7 is connected with the outfan of amplifier P2, it is launched
Pole is connected with the negative pole of amplifier P3 and the negative pole of polar capacitor C11 the most respectively；The N pole ground connection of described diode D12；Described
The outfan of amplifier P3 is also connected with central processing unit.
A kind of signal level adjustment type sewage treatment control system the most according to claim 4, it is characterised in that: described place
Reason chip U is the integrated chip of AD736.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610591699.2A CN106125613A (en) | 2016-07-25 | 2016-07-25 | A kind of signal level adjustment type sewage treatment control system |
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|---|---|---|---|
| CN201610591699.2A CN106125613A (en) | 2016-07-25 | 2016-07-25 | A kind of signal level adjustment type sewage treatment control system |
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| CN201610591699.2A Withdrawn CN106125613A (en) | 2016-07-25 | 2016-07-25 | A kind of signal level adjustment type sewage treatment control system |
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| CN (1) | CN106125613A (en) |
Citations (5)
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Application publication date: 20161116 |